Mark graduated from the University of California, Santa Barbara with majors in two distinctly different fields: psychology and music composition, receiving honors in both. He went on to earn graduate degrees in both fields and then became a licensed clinical psychologist in California. In his full-time private practice, Mark specializes in counseling children and teenagers and consulting with parents. He also conducts educational and neuropsychological evaluations as a means of helping children to be better understood and more successful in school.

Mark has worked extensively with children and teenagers struggling with learning differences/disabilities and AD/HD, as well as those suffering from brain injuries and complex neurodevelopmental disorders. His training includes an internship in clinical neuropsychology at Yale University School of Medicine in Connecticut, and a postdoctoral fellowship in child neuropsychology at the Neurological Institute of Columbia-Presbyterian Medical Center in New York.

Mark is a member of the National Academy of Neuropsychology, the International Neuropsychological Society, the International Dyslexia Association, and the Learning Disabilities Association of America. He also serves as a consulting psychologist for several local schools, as well as a consulting neuropsychologist for the San Diego City Schools District.